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Efficienza inibitrice di basi di schiff come inibitori di corrosione del bronzo

Monticelli, Cecilia and Balbo, Andrea and Esvan, Jérôme and Chiavari, Cristina and Martini, Carla and Zanotto, Federica and Marvelli, Lorenza and Robbiola, Luc Efficienza inibitrice di basi di schiff come inibitori di corrosione del bronzo. (2016) La Metallurgia Italiana, 108 (12). 31-39. ISSN 0026-0843

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Official URL: http://hdl.handle.net/11392/2363239

Abstract

As part of an M-ERA.NET project called B-IMPACT some polidentate Schiff bases were synthesized and tested as corrosion inhibitors of bronze. The tests consisted of exposures of bronze specimens to a concentrated artificial acid rain solution, containing or not containing the studied substances added under saturation conditions (< 10(3) M). Their inhibiting effect was evaluated during 20 day immersions by means of non-destructive electrochemical tests (Electrochemical Impedance Spectroscopy) and by finally recording the polarization curves. Observations by a scanning electron microscope coupled with Energy Dispersive X-ray Spectroscopy allowed comparing the morphology of corrosion attack in the absence and presence of inhibitors. The best inhibiting properties were achieved in the presence of 2-(salicylideneimino)thiophenol (SITP). The addition of phosphate ions to SITP induced the formation of a surface film particularly resistant against localized corrosion phenomena. Raman and XPS spectroscopy were applied in order to investigate the inhibition mechanism of sire without and with the presence of phosphate ions.

Item Type:Article
HAL Id:hal-01997744
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Ecole des Hautes Etudes en Sciences Sociales - EHESS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Università di Bologna (ITALY)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
French research institutions > Institut National de Recherches Archéologiques Préventives - INRAP (FRANCE)
Other partners > Ministère de la culture et de la communication (FRANCE)
Other partners > Università degli Studi di Ferrara - UNIFE (ITALY)
Laboratory name:
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Deposited By: Luc Robbiola
Deposited On:29 Jan 2019 10:21

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